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WILLIAM J. MEHARI?, OF PHILAUELPHI, PENNSYLVANIA.

Letters Patent 1Y0. 03,411, dated Aprilv 2, 1867.

IMPROVEMENT IN SPARK ARRESTERS.

T0 ALL WHOM IT MAY CONCERN:

Be it known that I, W. J. MEHARY, of Philadelphia, Pennsylvania, haveinvented an improved Spark Arrester; and I do hereby declare thefollowing to he a full, clear, and exact description of the some,rei'crence being had to the accompanying drawing, and to' the letters ofreference marked thereon.

My invention consists of a spark arrester, constructed in the peculiarmanner fully described hereafter, .in order that the sparks may at oncereach the reservoir, and in order that they may present no obstructionto the free escape of the steam.

In order to enable others skilled in the art' to make and use myinvention, I will now proceed to describe its construction andoperation. On reference to the accompanying drawing, which forms n partet' this specification-f Figure l is a vertical section of my improvedspark arrester.

Figure 2, a sectional plan on the line 1 2-, tig. 1; and

Figures 3 and 4, views illustrating a modication of part oi' the sparkarrester.

Similar letters refer te similar parts throughout the several views.

A represents the chimney oi'ia locomotive, and I3 the outer casing ot`the spark arrester, this case being similar in form to those of ordinaryconstruction. Within the outer easinrar is secured, by any suitablenumber of strips, a, an inner casing, I), which is of the tapering formrepresented, and terminates at the lower end in an opening for thereception of' the upper end oi' the chimney A, there being between theletter and the edge of the opening an annular space ZJ, two inches wide,or thoreabouts, for a purpose rendered apparent hereafter. The innercasing I) is surmounted by a frame, E, covered with wire gauze; thisframe being made either in the form represented in iig. I or that shownin figs. 3 and 4. From the apex of this frame, and within the same, issuspended, by rods e, the dellector Il, which is situated directly abovethe chimney. Oi' thc sparks discharged with other products ofcombustion, and with the waste steam7 the majority will he impelled withviolence against the deiiector II, will rebound therefrom against thesides ot' the inner casing, and, sliding down the latter, will possthrough the annular space 5 into the reservoir below. Other ignitedparticles will strike the gauze covering of the inner casing, and willtake the some course. Others again will pass through the meshes of thewire gauze, strike the upper portion d of the outer casing B, and passdown the annular space hetweenthe inner and outer casings to thereservoir below. It is important, in constructin,r spark arresters, thatwhile there is a free escape for the exhaust steam, there should he theleast opportunity for an escape of the sparks. In many spa-rk arrestersa ledgment is atorded for the sparks on the wire gauze, the meshesv ofwhich are gummed up, as it is technically termed, thereby obstructingthe free escape of the steam. In my improvement the sparks afterescaping from the chimney are at once disposed oi', such as fall. withinthe inner casing passing directly through the annular opening Z1, andsuch as pass through the gauze having a free and open annular spacebetween theinner and outer casings through which to fall to thereservoir.

I claim -as my invention, and desire to secure by Letters Patentl Theinner casing D, its wire gauze cover'E, dellector II, `the casing B,chimney and the annular opening the whole being constructed and arrangedsubstantially as and for the purpose herein set forth.

In testimony who'reofI have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM JAS. MEIIAEY,

Witnesses:

Wir. HALL WnxLnn, W. J. R. DELANY.

